<u>Answer:</u> The mass of 1 mole of lithium is 6.941 grams.
<u>Explanation:</u>
To calculate the mass of a compound or element, we use the formula used to calculate the number of moles:
Where,
Number of moles of lithium = 1 mole
Given mass of lithium = ? g
Molar mass of lithium = 6.941 g/mol
Putting value in above equation, we get:
Hence, the mass of 1 mole of lithium is 6.941 grams.
MgSO4, CO2, AlCl3 are the answer
Answer:
978mmHg
Explanation:
The total pressure of a gas mixture is defined as the sum of the pressure of each gas in the mixture.
If the mixture of gases you have 200mmHg for O₂, 350mmHg for N₂ and 428mmHg for He, total pressure of the mixture is:
200mmHg + 350mmHg + 428mmHg = <em>978mmHg</em>
Answer:
One positve charge
Explanation:
A neural atom is one that has equal number of protons and electrons. The protons are the positively charged subatomic particles in an atom. The electrons are the negatively charged particles in an atom.
For an atom to be charged during bond formation, it must lose or gain electrons. The number of electrons lost or gained conditions the charge on the ions it forms.
If in a neutral atom, it loses an electron, we see that the number of protons will now be more than the number of electrons by the 1 electron it lost. The charge will then be +1.
If a neutral atom gains an electron, the number of electrons will be more than that of the protons by 1. The charge will then be -1.
<u>Answer:</u>
<em>The material we are talking about would be serpentine.</em>
<u>Explanation:</u>
This material is available in two colours green or white and it has a hardness that amounts to 2.5. This material has a luster that is nonmetallic and more of waxy in nature.
This feature becomes Satiny when Nature of is material is Fibrous. This material is used as an insulating material against electricity as well as heat. The property of this mineral is very close to asbestos and is used when prevention from heat and electricity is required.
